A proposed change in immigration policy from the Trump administration could make it more difficult for immigrants to obtain a green card if family members use Medicaid or other government benefits for medical care. The “chilling effects” of the draft proposal already are being felt in California community health centers, one official said.

Many have complicated questions about whether their Medicaid or Medicare coverage can shift to their new homes. And for those seeking private insurance, using the ACA’s insurance marketplaces will likely be a new experience.

Fewer than 8 percent of enrollees in medical studies are Hispanic. Those who don’t participate have less access to cutting-edge treatments, and researchers have less data on how a drug works within the Hispanic population.